New Steering Strategies for the USNO Master Clocks

Paul A. Koppang, Demetrios N. Matsakis

Abstract:	All U.S. Naval Observatory (USNO) steering situations involve compromises to minimize the degradation of short-term stability of a steered clock while gaining maximal benefits from the long-term stability of the reference. In the case of steering UTC(USNO) to UTC, extra complications arise due to the 30-day data interval and the 15-day delay associated with the transfer of new information. A technique that minimizes the amount of control required to steer the USNO mean to UTC will be presented. Different strategies designed for optimal steering of UTC(USNO) and a backup master clock system located at the USNO will be described. Some of these strategies involve steering a maser to an intermediate mean that is steered to an extrapolation of UTC. Examples of optimal steering on real data will be reported.
Published in:	Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting December 7 - 9, 1999 Marriott's Laguna Cliffs Resort Dana Point, California
Pages:	277 - 284
Cite this article:	Koppang, Paul A., Matsakis, Demetrios N., "New Steering Strategies for the USNO Master Clocks," Proceedings of the 31th Annual Precise Time and Time Interval Systems and Applications Meeting, Dana Point, California, December 1999, pp. 277-284.
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